Method of making brake levers



Sept. 2 1924. 1,506,802

H. T. ANDERSON METHOD OF MAKING BRAKE LEVEHS Filed May 11 1922 FIG. 1PEG. 2 K

FIG. 3 22 FIG. 4

FIG. 6

FIG. 7 4 9 1- 9 lNVENTOR s 9 VI. '7 J m,, m m

Patented Sept. 2, 1924.

UNITED STATES PATENT OFFICE.

HARRY T. ANDERSON, OF BUTLER, PENNSYLVANIA, ASSIGNOR OF ONE-HALF T SORENHANSSON, 0F BUTLER, PENNSYLVANIA.

METHOD OF MAKING BRAKE LEVERS.

Application filed May 11,

To all whom it may concern:

Be it known that I, HARRY T. ANDERSON, a citizen of the United States,and resident of Butler, in the county of Butler and State ofPennsylvania, have invented a new and useful Improvement in Methods ofMaking Brake Levers; and I do hereby declare the following to be a full,clear, and exact description thereof.

My invention relates to brake-levers and method of making same.

The object of my invention is to provide abrake-lever which is strongand durable in construction, as well as a simple and efficient methodfor making same.

In the accompanying drawing Fig. 1 is a plan view of the blank fromwhich my improved brake-lever is formed; Fig. 2 is an end view of same;Fig. 3 is a plan view of the above blank after it has been subjected toa rolling and forging process to reduce the diameter of the endportions; Fig. 4: is an end view of same; Fig. 5 is a plan view of adrop-forge die for bringing the metal to the required shape; Fig. 6 is aplan view of the finished brake-lever; and Fig. 7 is a section on theline 7-7, Fig. 6.

In the drawing the numeral 2 designates a blank of suitable length anddiameter for forming my improved brake-lever. This blank. having beenheated, is subjected to a rolling and forging process whereby theelongated blank is produced tapering both ways from the portion 2remains of the original diameter of the blank. The tapered blank is thenplaced in a suitable bottom forging die l, shown in dotted lines Fig. 7,and the upper die l, such as shown in Fig. 3, is lowered and the blankis dropforged to produce the brake-lever shown in Fig. 6, with theexception of the trimming and drilling t give it the proper finish andto provide it with the end eyes 6 and 7 and the intermediate eye 8, forattachment to a brake-lever gear in the wellknown manner, the portion ofthe brakelever at and adjacent to the intermediate eye 8 being widerthan the ends of the lever,

1922. Serial No. 560,166.

as that portion is formed from the greatest diameter 2 of the elongatedblank 3.

The pair of dies by which the drop-forging operation is accomplished areof such form as t produce in the finished brakelever the flanges 9 onone side and the flat face 10 on the opposite side.

One of the features of my in'iproved brake-lever is having the flat face10 which bears against the round brake-rod, giving an even wearingsurfac on the brake-lever as distinguished from the flanges usuallyextending along the edges of the brakelever which were more readily wornby contact with the brake-rods, adjacent portions of the car structure,etc, and forming grooves therein, while by having a flat face there is agreater surface of direct contact with the round brake-lever-guide.

What I claim is:

1. The method of manufacturing brakelevers having three longitudinallyspaced points of pivotal support which consists in heating a blank ofsuitable length and thickness, rolling and forging said blank, wherebysaid blank is elongated and the original thickness of metal is preservedat its intermediate point of pivotal support and the metal tapers fromthat point toward both ends, and dropforging the elongated blank to formthe finished brake-lever.

2. The method of manufacturing brakelevers having three longitudinallyspaced points of pivotal support which consists in heating a blank ofsuitable length and thickness, elongating the blank by rolling andforging, whereby said blank is elongated and the original thickness ofthe blank at its intermediate point of pivotal support is preserved andthe metal tapered from that point to each end, the point of originalthickness being nearer to one end than the other, and drop-forging theblank to produce the finished brake-lever.

In testimony whereof I, the said HARRY T. ANDnRsoN, have hereunto set myhand.

HARRY T. ANDERSON.

